Hi, welcome to the forums!
I'm assuming that you got both of them here, right? They are FICO scores, not from some credit monitoring service?
Each credit bureau commissions its own scoring formula, so you wind up with different scores for each, but probably not 64 points' worth.
Hit the printable option, print them out, and get out your highlighter and compare reports. Chances are that one report has an account a lot older than the other, or a collection, or lates, or dates on things are different. While you're at it, check all the versions of your name and address they have. This won't affect scores, unless someone else's info has wandered on to your reports, or vice versa.
At any rate, look for discrepancies.
* Credit is a wonderful servant, but a terrible master. * Who's the boss --you or your credit?
FICO's: EQ 781 - TU 793 - EX 779 (from PSECU) - Done credit hunting; having fun with credit gardening. - EQ 590 on 5/14/2007